nimschke



(No Model.)

L. W. NIMSGHKE.

LOOK HINGE.

No. 394,788, Patented Dec. 18,,1888.

- NINE/170R,

WITNESSES.-

ATTORNEYJT UNITED STATES PATENT OFFICE.

LOUIS IV. NIMSCHKE, OF NEIV YORK, Y.

LOCK-HINGE.

SPECIFICATION forming part of Letters Patent No. 394,788, dated December18, 1888.

Application filed August 1, 1888. Serial No. 281,626. (No model.) 4

T0 aZZ whom it may concern.-

Be it known that I, LOUIS W. NIMSOHKE, of the city, county, and State ofNew York, have invented certain new and useful Improvements inLock-Hinges, of which the following is a specification.

This invention relates to an improved lockhinge for shutters, wherebythe shutter is locked in a firm and reliable manner when open and isreadily and conveniently released when closing, the same; and theinvention consists of a shutter-hinge provided with a downward-extendedpintle and a spring-locking latch that is guided by a slot in it,through which slot said pintle passes and adapted to engage the shank ofthe shutter-hinge, said latch being made integral wit-h the strapattached to the window-frame.

In the accompanying drawings, Figure 1 represents a front elevation of awindow, showing one shutter in open and onein closed position, saidshutter being provided with my improved lock-hinge. Fig. 2 is a sideelevation of a lock-hinge, drawn on a larger scale. Figs. 3 and 4 areend elevations showing the shutter respectively in open and closedposition, and Fig. 5 is a top view of the lock-hinge.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a shutter-hinge, of which onesleeve, a, is applied by an angle-iron made integral with the shank ofthe sleeve to the shutterstile, while the second sleeve, b, is appliedto the window-casing. The pintle B of the lock-hinge is entended belowthe sleeve 1) and passed through a slot, (1, of a spring-latch, D, whichlatter is bent up at the outer end into the path of the shank a of theupper hingesleeve, a.

The spring-latch D is made integral with a U-shaped spring, D, the shankof which is secured to the window-casing and forms the fastening-strap.This spring and latch is bent from one piece of metal and furnishes asufficient spring action to securely lock the shutter in open position.\Vhen the shutter is being opened, the shank a of the upper sleeve, a,passes over the bent upper end of the spring-latch D and depresses thesame until it has passed over the edge of the springlatch and is lockedby the same, as shown on the left-hand side of Fig. 1 and in Fig. 3. Forclosing the shutter the bent end of the springlatch is forced down, soas to be clear of the shank a of the sleeve to. The slot cl in thespring-latch serves to limit, in connection with the pintle B, theextent of motion of the spring-latch and prevents thereby theoverstraining and bending out of shape of the spring action in thelatch. As the springlatch can be made at comparatively small expense,and as this is the only additional piece required for locking theshutter, the lockinghinge can be furnished at a comparatively smallexpense, while forming a strong and durable locking device for theshutter-hinge.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination, with a fixed pintlesleeve, amovable pintle-sleeve applied to the shutter, a pintle extended belowthe fixed pintle-sleeve, and a spring-latch made integral with thefastening-strap and provided with a slot passing around the pintle,substantially as set forth.

2. In a lock-hinge for "shutters, a springlatch composed of afastening-strap having a U-shaped spring portion and a curved endprovided with a slot for passing over the pintle of the hinge,substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

LOUIS W. NIMSOHKE.

Vitnesses:

CARL KARP, MARTIN PETRY.

